Give Details about Feeding in preterm and extreme preterm, introduction, incremwnt, fluid change , dangee signs etc
Reading File
Finding Sources
Finding Sources
Searching PubMed
"preterm infant" AND "enteral feeding" AND "extremely preterm"
Finding Sources
Finding Sources
Searching PubMed
"preterm infant" AND "enteral nutrition"
Finding Sources
Finding Sources
Finding Sources
Finding Sources
Searching the Web
preterm infant feeding guidelines introduction increment fluid requirements danger signs NEC 2024
Finding Sources
Finding Sources
The library doesn't have a dedicated neonatology textbook on this topic, but I have comprehensive knowledge to provide a thorough answer. Let me compile this from established neonatal guidelines (WHO, AAP, ESPGHAN, Gomella's Neonatology, etc.):
Feeding in Preterm & Extremely Preterm Infants
Definitions
| Category | Gestational Age | Birth Weight |
|---|---|---|
| Preterm | < 37 weeks | < 2500 g (LBW) |
| Very Preterm | < 32 weeks | < 1500 g (VLBW) |
| Extremely Preterm (EPT) | < 28 weeks | < 1000 g (ELBW) |
1. Introduction to Feeding
Why Feeding is Challenging in Preterm Infants
- Immature suck-swallow-breathe coordination (develops ~32–34 weeks)
- Reduced gastric capacity and motility
- Immature gut hormone responses and enzymatic activity
- Increased risk of necrotizing enterocolitis (NEC), especially in ELBW
- Increased caloric needs for catch-up growth (120–130 kcal/kg/day needed vs. 100–110 for term)
Goals of Feeding
- Achieve postnatal growth approximating intrauterine growth (~15–20 g/kg/day)
- Prevent metabolic complications (hypoglycemia, electrolyte imbalance)
- Support neurodevelopment (brain grows rapidly in 3rd trimester)
- Avoid NEC, aspiration, and feeding intolerance
2. Types of Feeding
A. Parenteral Nutrition (PN)
Started on Day 1 in all infants < 32 weeks or < 1500 g who cannot receive full enteral feeds.
| Component | Day 1 | Increment | Target |
|---|---|---|---|
| Glucose (GIR) | 4–6 mg/kg/min | +1–2/day | 10–14 mg/kg/min |
| Amino acids | 2–3 g/kg/day | +0.5–1/day | 3.5–4 g/kg/day |
| Lipids (IVFE) | 1–2 g/kg/day | +0.5–1/day | 3–4 g/kg/day |
| Calories (PN) | ~50–60 kcal/kg/day | — | 80–100 kcal/kg/day |
Start amino acids and lipids on Day 1 — delays worsen catabolism and neurodevelopment.
B. Enteral Feeds — Preferred Source: Mother's Own Milk (MOM)
Priority: MOM > Donor Human Milk (DHM) > Preterm Formula
3. Total Fluid Requirements
| Age | Fluid Volume (ml/kg/day) |
|---|---|
| Day 1 | 60–80 ml/kg/day |
| Day 2–3 | 80–100 ml/kg/day |
| Day 4–7 | 100–140 ml/kg/day |
| After 1st week | 140–160 ml/kg/day (up to 180 in EPT) |
Extremely preterm (< 28 wks) have higher insensible water loss due to thin, immature skin:
- Day 1–2: up to 100–120 ml/kg/day even on full humidification
- Nurse in humidified incubator (80–90% humidity) to reduce IWL
Key: Monitor weight daily. Allow physiologic weight loss of 5–10% in PT, up to 15% in EPT in first week. Failure to regain birth weight by day 14 is a concern.
4. Introduction of Enteral Feeds
When to Start?
- Stable preterm > 28 weeks: within 1–2 hours of birth (trophic/minimal enteral nutrition)
- Extremely preterm (< 28 wks): start within 24–48 hours once hemodynamically stable
- Contraindications: hemodynamic instability (requiring vasopressors), suspected NEC, perforation, severe birth asphyxia with ileus
Starting Volume
| Gestation | Starting Volume |
|---|---|
| < 26 weeks | 0.5–1 ml/kg/feed (or continuous) |
| 26–28 weeks | 1–2 ml/kg/feed |
| 28–32 weeks | 2–3 ml/kg/feed |
| > 32 weeks | 3–5 ml/kg/feed |
Feeding Frequency
- < 28 weeks: Continuous nasogastric (NG) infusion or every 2 hours (q2h)
- 28–32 weeks: Every 2–3 hours (q2h or q3h)
-
32 weeks: Every 3 hours (q3h), transitioning to on-demand
Route
- < 32–34 weeks: Orogastric (OG) or nasogastric (NG) tube
- ≥ 32–34 weeks: Begin transition to oral/breastfeeding when sucking reflex matures; use non-nutritive sucking (NNS) and kangaroo care to facilitate
5. Increment in Feeds
Advancement Protocol
| Birth Weight / Gestation | Increment per day |
|---|---|
| ELBW (< 1000 g / < 28 wks) | 10–15 ml/kg/day |
| VLBW (1000–1500 g) | 15–20 ml/kg/day |
| LBW (1500–2500 g) | 20–30 ml/kg/day |
Faster advancement (20 ml/kg/day) in VLBW without evidence of increased NEC risk per SIFT trial (2019), but most centers remain conservative at 15–20 ml/kg/day for ELBW.
Target Volume
- Full enteral feeds: 150–180 ml/kg/day
- Once full feeds achieved, wean PN over 24–48 hours
- At full feeds, consider human milk fortifier (HMF) for infants < 34 weeks or < 2000 g to boost protein, calcium, phosphorus
Human Milk Fortification
- Start when feed volume reaches 100 ml/kg/day
- HMF adds: +1 g/100 ml protein, +50–60 kcal/100 ml, Ca, P, Zn
- Target: 24–27 kcal/oz (standard 20 kcal/oz breast milk insufficient for preterm growth)
6. Fluid Changes and Monitoring
Daily Monitoring Parameters
| Parameter | Frequency | Target |
|---|---|---|
| Weight | Daily | Lose ≤15% (EPT) in week 1; gain ~15–20 g/kg/day after |
| Urine output | Every 8–12 hrs | 1–3 ml/kg/hr |
| Serum Na | Daily (1st week) | 135–145 mEq/L |
| Serum glucose | q4–6h initially | 50–110 mg/dL |
| Serum K, Ca | Daily in 1st week | K: 3.5–5.5; iCa: 1.1–1.4 |
| Gastric residuals | Before each feed (if symptomatic) | Not routinely checked |
Fluid Adjustments
- Increase fluids if: weight loss > 2–3% per day, hypernatremia (Na > 145), oliguria (< 0.5 ml/kg/hr), poor skin turgor
- Restrict fluids if: edema, weight gain > 20 g/day in 1st week, hyponatremia (Na < 130), PDA with fluid overload
7. Danger Signs (Red Flags for Feeding Intolerance/NEC)
Clinical Signs — STOP and Evaluate Feeds
| Sign | Significance |
|---|---|
| Abdominal distension (visible, tense) | NEC, ileus, perforation |
| Bilious (green) vomiting/aspirates | Obstruction, NEC |
| Bloody stools / rectal bleeding | NEC stage II–III |
| Large gastric residuals (> 50% of feed volume or > 2 ml in ELBW) | Feeding intolerance, ileus |
| Abdominal wall erythema/discoloration | Advanced NEC (stage III) |
| Apnea/bradycardia with feeds | Aspiration, vagal response |
| Temperature instability / lethargy | Sepsis, NEC |
| Abdominal tenderness/rigidity | Perforation, surgical NEC |
| Pneumatosis intestinalis on X-ray | NEC stage II (diagnostic) |
| Portal venous gas | Severe NEC, pre-perforation |
| Free air under diaphragm | Perforation — surgical emergency |
NEC Staging (Bell's Modified Criteria — quick reference)
| Stage | Features |
|---|---|
| I (Suspected) | Feeding intolerance, gastric residuals, mild distension, temperature instability |
| II (Definite) | Above + pneumatosis intestinalis, absent bowel sounds, metabolic acidosis |
| III (Advanced) | Above + deterioration, DIC, portal gas, perforation, cardiovascular collapse |
Management When Danger Signs Present
- Nil per os (NPO) — stop all enteral feeds
- Insert/confirm NG tube to decompress
- IV antibiotics (Ampicillin + Gentamicin ± Metronidazole)
- Serial abdominal X-rays (AP + left lateral decubitus)
- Surgical consult if free air, portal gas, or clinical deterioration
8. Special Considerations for Extremely Preterm (< 28 Weeks)
| Issue | Recommendation |
|---|---|
| Gut priming | Start 0.5–1 ml/kg colostrum orogastrically within 1–2 hrs of birth even if unstable |
| Indomethacin/Ibuprofen use | May impair gut perfusion; temporary feed hold often recommended |
| Steroids (postnatal dexamethasone) | May increase NEC risk; monitor closely |
| Blood transfusion | Transfusion-associated NEC reported; consider holding feeds for 12–24 hrs peri-transfusion (unit-dependent policy) |
| Probiotic prophylaxis | Lactobacillus ± Bifidobacterium reduce NEC risk — use per unit protocol |
| Vitamin D | 400–800 IU/day starting from stable enteral feeds |
| Iron | 2–3 mg/kg/day after 4–6 weeks (when tolerating enteral feeds) |
9. Transition to Oral Feeding
- Begins when GA reaches ~32–34 weeks and infant is medically stable
- Use non-nutritive sucking (NNS), skin-to-skin/kangaroo care, and oral stimulation programs
- Cue-based feeding reduces length of hospital stay
- Readiness signs: rooting, suckling movements, hands to mouth, alertness during feeding time
- Transition complete when full oral feeds sustained for 48–72 hours without desaturations
Summary Table — Feeding Milestones
| Gestation | Start Feeds | Volume Start | Increment | Full Feeds Target |
|---|---|---|---|---|
| < 26 wks | Day 1–2 | 0.5–1 ml/kg | 10 ml/kg/day | Day 14–21 |
| 26–28 wks | Day 1 | 1–2 ml/kg | 10–15 ml/kg/day | Day 10–14 |
| 28–32 wks | Day 1 | 2–4 ml/kg | 15–20 ml/kg/day | Day 7–10 |
| 32–36 wks | Day 1 | 4–8 ml/kg | 20–30 ml/kg/day | Day 5–7 |
Key References: Gomella's Neonatology (8e), ESPGHAN 2022 enteral nutrition guidelines for preterm infants, AAP Committee on Nutrition, WHO Essential Newborn Care, Bell's NEC staging criteria, SIFT Trial (NEJM 2019).
This is a shared conversation. Sign in to Orris to start your own chat.